InterPro domain: IPR011831

This enzyme, glucose-1-phosphate adenylyltransferase, is also called ADP-glucose pyrophosphorylase. The plant form is an alpha2, beta2 heterodimer, allosterically regulated in plants [ 1 ]. Both subunits are homologous and included in this entry. In bacteria, both homomeric forms of GlgC and more active heterodimers of GlgC and GlgD have been described [ 2 ]. This entry describes the GlgC subunit only. This enzyme appears in variants of glycogen synthesis pathways that use ADP-glucose, rather than UDP-glucose as in animals.

1. Crystal structure of potato tuber ADP-glucose pyrophosphorylase. EMBO J. 24, 694-704
2. The ADP-glucose pyrophosphorylase from Streptococcus mutans provides evidence for the regulation of polysaccharide biosynthesis in Firmicutes. Mol. Microbiol. 90, 1011-27